Flat head assembly structure of stirring accessory
By adopting a flat-head assembly structure between the mixing accessories and the output shaft of the chef machine, using the coordination between the steel ball and the limiting groove and the design of the steel ball sliding groove, the problem of friction between the stirring accessories and the output shaft in the prior art is solved, and the effect of simplifying disassembly and reducing friction is achieved.
Patent Information
- Application Number
- CN202510738001.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-08-12
Smart Images
Figure CN120458423A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of food processors, and in particular relates to a flat head assembly structure of a stirring accessory. Background Art
[0002] A food processor is a multifunctional kitchen appliance primarily used for making Chinese and Western pastries, combining kneading, beating, and stirring. At its core is a powerful motor. When powered, this motor drives gears, with different gear combinations providing varying speeds and forces. These gears, in turn, drive other accessories (such as the mixing element) to deliver the desired stirring force.
[0003] The stirring attachment of the existing food processor usually adopts a cylindrical connection structure. When the stirring attachment needs to be installed and uninstalled, the stirring attachment and the output shaft of the driving mechanism move relative to each other, and black powder is easily rubbed out between them. Once the black powder falls into the mixing container, it will affect the normal use of the food processor. Therefore, it is necessary to improve the matching structure between the stirring attachment and the output shaft in the existing technology. Summary of the Invention
[0004] The purpose of the present invention is to provide a flat head assembly structure of a stirring accessory to solve the above-mentioned problems existing in the prior art.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] A flat head assembly structure for a stirring accessory comprises a stirring accessory, an output shaft, a release knob, and two steel balls. A clamping piece is fixed to the upper end of the stirring accessory, and a plug-in slot is provided at the lower end of the output shaft. The clamping piece is matched and plugged into the plug-in slot. Limiting slots are provided on both sides of the clamping piece in the width direction. An arc-shaped avoidance slot is provided on the outer wall of the output shaft corresponding to the limiting slot. One side of the two steel balls is respectively disposed in the two arc-shaped avoidance slots and is engaged with the limiting slots.
[0007] The release knob is sleeved on the lower part of the output shaft, and two arc-shaped steel ball sliding grooves are provided on the inner wall of the release knob. The width of the steel ball sliding groove gradually increases from one end to the other end, and the inner wall of one end of the steel ball sliding groove abuts against the other side of the steel ball located in the arc-shaped avoidance groove. The width of the other end of the steel ball sliding groove is smaller than the diameter of the steel ball. When the clip is matched and plugged into the plug-in groove, steel ball limiting space is provided in the arc-shaped avoidance groove on both sides of the clip. The sum of the steel ball limiting space and the width of the other end of the steel ball sliding groove is greater than the diameter of the steel ball; the release knob is rotatably connected to the output shaft through a torsion spring located above the steel ball sliding groove, so as to make the other side of the steel ball abut against one end of the steel ball sliding groove through the spring force of the torsion spring.
[0008] As a preferred technical solution in the present invention, a powder receiving tray located at the lower end of the clamping piece is fixed to the upper portion of the stirring accessory, and the powder receiving tray is spaced apart from the release knob.
[0009] As a preferred technical solution in the present invention, an inner groove is provided at the upper end of the powder receiving tray.
[0010] As a preferred technical solution in the present invention, a circular groove is provided at the lower end of the output shaft, and vertical openings are provided on the outer wall of the circular groove for plugging into the two sides of the card connector. The circular groove cooperates with the two vertical openings to form the plug-in groove, and arc-shaped avoidance grooves are provided on the output shaft on both sides of the vertical openings.
[0011] As a preferred technical solution in the present invention, a toggle plate is fixed on the outer wall of the release knob.
[0012] As a preferred technical solution in the present invention, the upper part of the release knob is provided with an installation cavity located above the steel ball sliding groove, the torsion spring is arranged in the installation cavity, and the two ends of the torsion spring are respectively connected to the output shaft and the release knob.
[0013] As a preferred technical solution in the present invention, a connecting sleeve located above the release knob is provided on the upper portion of the output shaft, and the connecting sleeve is rotatably connected to the output shaft through a bearing.
[0014] As a preferred technical solution in the present invention, an annular clamping groove is provided at the lower part of the output shaft, the diameter of the inner wall of the annular clamping groove is larger than the width of the clamping piece, and a clamping spring located at the lower end of the release knob is clamped in the annular clamping groove.
[0015] As a preferred technical solution in the present invention, the output shaft at the upper end of the plug-in slot is connected to a spring mounting slot, a spring is installed in the spring mounting slot, the upper end of the spring is connected to the inner top surface of the spring mounting slot, and the lower end of the spring is abutted against the upper end of the card plate.
[0016] Beneficial effect: The present invention realizes the detachable connection of the stirring accessory at the lower end of the output shaft through the cooperation of the steel ball and the limiting groove. In practice, when the stirring accessory is disassembled and assembled, there is basically only friction between the steel ball and the limiting groove, and the clamping piece where the limiting groove is located is a sheet-like structure, so that the contact surface between the clamping piece and the steel ball is relatively small, thereby minimizing the friction area as much as possible. At the same time, combined with the rolling characteristics of the steel ball, the relative friction can be further reduced, so that the probability of black powder being rubbed out between the components is smaller, which is a great improvement over the friction of the cylindrical connection structure in the prior art. Among them, a release knob is installed at the lower part of the output shaft through a torsion spring, so that the release knob can be rotated relative to the output shaft, and a steel ball sliding groove is provided in the output shaft to press against the steel ball and allow the steel ball to exit the limiting groove. The cooperation relationship between the steel ball and the limiting groove can be achieved by rotating the release knob, thereby realizing the binding and release of the steel ball on the clamping piece, making the disassembly and assembly of the stirring accessory simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a cross-sectional schematic diagram of the present invention;
[0018] Figure 2 It is a three-dimensional schematic diagram of the present invention;
[0019] Figure 3 It is a schematic diagram of a part of the structure of the present invention in a three-dimensional state;
[0020] Figure 4 It is a schematic diagram of part of the structure of the present invention in a top view.
[0021] In the figure: 1-stirring accessory; 101-clamping piece; 102-powder collecting plate; 2-output shaft; 3-release knob; 301-steel ball sliding groove; 302-switching plate; 4-steel ball; 5-torsion spring; 6-connecting sleeve; 7-bearing. DETAILED DESCRIPTION
[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.
[0023] Example:
[0024] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, this embodiment provides a flat head assembly structure of a stirring accessory, including a stirring accessory 1, an output shaft 2, a release knob 3 and two steel balls 4. A snap-fit piece 101 is fixed to the upper end of the stirring accessory 1, and a plug-in slot is provided at the lower end of the output shaft 2. The snap-fit piece 101 is matched and plugged into the plug-in slot, so that the stirring accessory 1 and the output shaft 2 intersect in the vertical direction, which facilitates the connection between the two. Limiting slots are provided on both sides of the width direction of the snap-fit piece 101, and an arc-shaped avoidance slot is provided on the outer wall of the output shaft 2 corresponding to the limiting slot. The two One side of the steel ball 4 is respectively arranged in two arc-shaped avoidance grooves and engaged with the limit groove, that is, a steel ball 4 is arranged in each arc-shaped avoidance groove, and one side of the steel ball 4 is just engaged in the limit groove. When the limit groove cannot move out of the arc-shaped avoidance groove, the snap-on piece 101 can be limited in the vertical direction to prevent the snap-on piece 101 from being separated from the plug-in slot. Then, when the output shaft 2 rotates, the snap-on piece 101 can be driven to rotate by the output shaft 2, and the entire stirring accessory 1 can be driven to rotate by the snap-on piece 101 to realize functions such as beating eggs and stirring.
[0025] What needs to be further explained in detail is that the release knob 3 is sleeved on the lower part of the output shaft 2 and can be rotated relative to the output shaft 2. Two arc-shaped steel ball sliding grooves 301 are provided on the inner wall of the release knob 3. The width of the steel ball sliding groove 301 gradually increases from one end to the other end, and the inner wall of one end of the steel ball sliding groove 301 abuts against the other side of the steel ball 4 located in the arc-shaped avoidance groove. Then, when the steel ball 4 is correspondingly arranged at one end of the steel ball sliding groove 301, the steel ball 4 can be pressed by one end of the steel ball sliding groove 301 to ensure that the steel ball 4 is stably stuck. The two steel balls 4 can also be used to ensure the stability of the release knob 3, so that the release knob 3 can be stably sleeved on the outside of the output shaft 2, and the width of the other end of the steel ball sliding groove 301 is smaller than the diameter of the steel ball 4, so that the steel ball 4 cannot completely enter the steel ball sliding groove 301. On this basis, when the card 101 is matched and plugged into the plug-in groove, steel ball limiting spaces are provided in the arc-shaped avoidance grooves on both sides of the card 101 to ensure that the steel ball 4 can always be partially located in the steel ball Within the limiting space, the sum of the width of the steel ball limiting space and the other end of the steel ball sliding groove 301 is greater than the diameter of the steel ball 4, so that a space is reserved between the limiting groove and the other end of the steel ball sliding groove 301 to allow the steel ball 4 to completely escape from the limiting groove, and at the same time, the steel ball 4 will not completely escape from the arc-shaped avoidance groove, so that the steel ball 4 can always correspond to the arc-shaped avoidance groove, and the steel ball 4 can always be limited by the arc-shaped avoidance groove, so that when the stirring accessory 1 is installed, it can be ensured that the steel ball 4 can be accurately snapped into the limiting groove The release knob 3 is rotatably connected to the output shaft 2 through the torsion spring 5 located above the steel ball sliding groove 301. On the one hand, the stability of the release knob 3 can be ensured by means of the torsion spring 5. On the other hand, the spring force of the torsion spring 5 can be used to make the other side of the steel ball 4 abut against one end of the steel ball sliding groove 301. Then, when there is no external force to pull the release knob 3, it can be ensured that the steel ball 4 is clamped in the limit groove, that is, it is ensured that the stirring accessory 1 is stably clamped to the lower end of the output shaft 2 in the natural state.
[0026] It should be noted that when the stirring accessory 1 needs to be disassembled, the release knob 3 can be rotated with one hand to rotate the steel ball sliding groove 301 of the release knob 3 relative to the steel ball 4. In this process, because the distance between the limit groove and the inner wall of the steel ball sliding groove 301 is gradually increasing, and the distance is greater than the diameter of the steel ball 4, the steel ball 4 basically does not rotate or only rotates a small amount. When the steel ball 4 is correspondingly arranged at the other end of the steel ball sliding groove 301, the stirring accessory 1 can be pulled downward. The limiting grooves on both sides of the snap-in piece 101 completely abut the steel ball 4 against the steel ball sliding groove 301, so that the snap-in piece 101 is freed from the restraint of the steel ball 4, thereby realizing the disassembly of the stirring accessory 1; at this time, if a new stirring accessory 1 needs to be installed, it is only necessary to insert the snap-in piece 101 into the insertion groove, and then release the release knob 3. The release knob 3 automatically resets under the action of the torsion spring 5, and at the same time, the steel ball sliding groove 301 squeezes the steel ball 4 into the limiting groove, thereby realizing the snap-in limitation of the stirring accessory 1.
[0027] The present invention achieves a detachable connection between the stirring accessory 1 and the lower end of the output shaft 2 by cooperating with the steel ball 4 and the limiting groove. In practice, when the stirring accessory 1 is disassembled and assembled, there is basically only friction between the steel ball 4 and the limiting groove. The clamping piece 101 where the limiting groove is located is a sheet-like structure, which makes the contact surface between the clamping piece 101 and the steel ball 4 relatively small, thereby minimizing the friction area as much as possible. At the same time, combined with the rolling characteristics of the steel ball 4, relative friction can be further reduced, thereby reducing the probability of black powder being generated by friction between the components. Compared with the friction of the cylindrical connection structure in the prior art, it has made a significant improvement. Among them, a release knob 3 is installed at the lower part of the output shaft 2 through a torsion spring 5, so that the release knob 3 can rotate relative to the output shaft 2. A steel ball sliding groove 301 is provided in the output shaft 2 to press the steel ball 4 and allow the steel ball 4 to exit the limiting groove. The release knob 3 can be rotated to achieve the cooperation relationship between the steel ball 4 and the limiting groove, thereby achieving the binding and release of the steel ball 4 on the clamping piece 101, making the disassembly and assembly of the stirring accessory 1 simple and convenient.
[0028] As a preferred implementation scheme in this embodiment, it needs to be further explained that a powder collecting plate 102 located at the lower end of the clamping piece 101 is fixed on the upper part of the stirring accessory 1. In the actual process of loading and unloading the stirring accessory 1, the powder collecting plate 102 is located at the lower end of the clamping piece 101, so that the powder that may be rubbed out when the stirring accessory 1 and the output shaft 2 rotate relative to each other can fall on the powder collecting plate 102. All the powder is caught by the powder collecting plate 102 to prevent the powder from falling into the stirring container. At the same time, the powder collecting plate 102 is spaced apart from the release knob 3, so that friction between the powder collecting plate 102 and the release knob 3 can be avoided when the stirring accessory 1 rotates.
[0029] As a preferred implementation scheme in this embodiment, it needs to be further explained that the upper end of the powder receiving tray 102 is provided with an inner groove, which can better hold the powder that may be rubbed out when the stirring accessory 1 and the output shaft 2 rotate relative to each other. It should be noted that, preferably, in practice, the inner groove at the upper end of the powder receiving tray 102 can be a cavity with an opening at the upper end. In practice, the opening at the upper end of the cavity is docked with the lower end of the release knob 3, and the gap with the lower end of the release knob 3 is very small, ensuring that when the stirring accessory 1 and the output shaft 2 rotate relative to each other and rub out powder, the powder can accurately fall into the opening at the upper end of the cavity under the constraint of the release knob 3, and then be concentrated in the cavity at the upper end of the powder receiving tray 102, further reducing the possibility of powder falling into the stirring container and improving the user experience.
[0030] As a preferred implementation scheme in this embodiment, it needs to be further explained that a circular groove is provided at the lower end of the output shaft 2, and vertical openings are provided on the outer wall of the circular groove for plugging into the two sides of the card connector 101. The circular groove and the two vertical openings cooperate to form the plug-in groove, so that the contact area between the card connector 101 and the output shaft 2 can be reduced when the card connector 101 is inserted into or pulled out of the plug-in groove, thereby reducing friction and reducing the possibility of powder being rubbed out between the stirring accessory 1 and the output shaft 2. On this basis, arc-shaped avoidance grooves are provided on the output shaft 2 on both sides of the vertical openings, which does not affect the steel ball 4 being plugged into the limit groove of the card connector 101 through the arc-shaped avoidance groove, thereby realizing the limitation of the card connector 101.
[0031] As a preferred implementation scheme in this embodiment, it should be further explained that a toggle plate 302 is fixed to the outer wall of the release knob 3. By pushing the toggle plate 302, the release knob 3 can be more easily controlled to rotate outside the output shaft 2. It should be noted that, preferably, the toggle plate 302 is extended along the surface of the release knob 3 in the direction of the spring force of the torsion spring, so that a finger placement groove is formed between the toggle plate 302 and the surface of the release knob 3. In this way, when applying force to the toggle plate 302, a finger can be placed in the finger placement groove, and then when the release knob 3 is rotated, it is more convenient to apply force when the release knob 3 drives the torsion spring 5 to tighten.
[0032] As a preferred implementation scheme in this embodiment, it needs to be further explained that the upper part of the release knob 3 is provided with an installation cavity located above the steel ball sliding groove 301, and the torsion spring 5 is arranged in the installation cavity, which will not affect the movement of the steel ball 4 in the steel ball sliding groove 301, nor will it affect the action of the torsion spring 5. The two ends of the torsion spring 5 are respectively connected to the output shaft 2 and the release knob 3, ensuring that the release knob 3 can stably and elastically rotate outside the output shaft 2.
[0033] As a preferred embodiment of this embodiment, it should be further explained that the upper portion of the output shaft 2 is provided with a connecting sleeve 6 located above the release knob 3, so that the connecting sleeve 6 does not interfere with the release knob 3, and the two do not affect each other. The connecting sleeve 6 is rotatably connected to the output shaft 2 via a bearing 7. Preferably, the connecting sleeve 6 is rotatably connected to the output shaft 2 via two bearings 7, the outer ring of the bearing 7 is connected to the connecting sleeve 6, and the inner ring of the bearing 7 is connected to the upper portion of the output shaft 2. The connecting sleeve 6 is then installed on the body of the food processor, so that the output shaft 2 can be rotatably connected to the body of the food processor via the connecting sleeve 6. It should be noted that the upper end of the output shaft 2 is connected to the drive mechanism through the connecting sleeve 6, such as directly connected to the motor or connected to the motor through a gear set, so that the output shaft 2 rotates under the control of the drive mechanism.
[0034] As a preferred implementation scheme in this embodiment, it should be further explained that an annular snap-fit groove is provided at the lower portion of the output shaft 2, the diameter of the inner wall of the annular snap-fit groove being larger than the width of the snap-fit plate 101, and a retaining spring (not shown in the figure) located at the lower end of the release knob 3 is retained in the annular snap-fit groove. The retaining spring can enhance the stability of the release knob 3 while also not affecting the insertion and removal of the snap-fit plate 101 in the insertion groove. It should be noted that, in practice, an annular snap-fit groove can also be provided on the output shaft 2 at the upper end of the release knob 3, and a retaining spring can also be installed in the annular snap-fit groove. The cooperation of the two retaining springs can further ensure the stability of the release knob 3.
[0035] As a preferred implementation scheme in this embodiment, it needs to be further explained that a spring mounting groove is connected to the output shaft 2 at the upper end of the plug-in groove, and a spring 8 is installed in the spring mounting groove. The upper end of the spring 8 is connected to the inner top surface of the spring mounting groove, and the lower end of the spring 8 is in contact with the upper end of the snap-fit piece 101. In practice, when the release knob 3 is turned to disassemble the stirring accessory 1, it is only necessary to disengage the steel ball 4 from the limit groove, and the spring 8 can use the spring force to press down the snap-fit piece 101, so that the snap-fit piece 101 can be more easily disengaged from the output shaft 2.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.
Claims
1. A flat head assembly structure for a stirring accessory, characterized in that: The invention comprises a stirring accessory (1), an output shaft (2), a release knob (3) and two steel balls (4); a clamping piece (101) is fixed to the upper end of the stirring accessory (1); a plug-in slot is provided at the lower end of the output shaft (2); the clamping piece (101) is matched and plugged into the plug-in slot; both sides of the clamping piece (101) in the width direction are provided with limiting slots; an arc-shaped avoidance slot is provided on the outer wall of the output shaft (2) corresponding to the limiting slot; one side of the two steel balls (4) is respectively provided in the two arc-shaped avoidance slots and is matched and engaged with the limiting slots; The release knob (3) is sleeved on the lower part of the output shaft (2), and two arc-shaped steel ball sliding grooves (301) are provided on the inner wall of the release knob (3). The width of the steel ball sliding groove (301) gradually increases from one end to the other end, and the inner wall of one end of the steel ball sliding groove (301) abuts against the other side of the steel ball (4) located in the arc-shaped avoidance groove. The width of the other end of the steel ball sliding groove (301) is smaller than the diameter of the steel ball (4). When the clamping piece (101) matches When plugged into the plug-in slot, a steel ball limiting space is provided in the arc-shaped avoidance grooves on both sides of the clamping piece (101), and the sum of the width of the steel ball limiting space and the other end of the steel ball sliding groove (301) is greater than the diameter of the steel ball (4); the release knob (3) is rotatably connected to the output shaft (2) through a torsion spring (5) located above the steel ball sliding groove (301), so as to make the other side of the steel ball (4) abut against one end of the steel ball sliding groove (301) through the spring force of the torsion spring (5).
2. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: A powder receiving pan (102) located at the lower end of the clamping piece (101) is fixed to the upper portion of the stirring accessory (1), and the powder receiving pan (102) is spaced apart from the release knob (3).
3. The flat head assembly structure of a stirring accessory according to claim 2, characterized in that: The upper end of the powder receiving plate (102) is provided with an inner groove.
4. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: The lower end of the output shaft (2) is provided with a circular groove, and the outer wall of the circular groove is provided with vertical openings that are plugged into the two sides of the clamping piece (101). The circular groove cooperates with the two vertical openings to form the plug-in groove, and arc-shaped avoidance grooves are provided on the output shaft (2) on both sides of the vertical openings.
5. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: A toggle plate (302) is fixed on the outer wall of the release knob (3).
6. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: The upper portion of the release knob (3) is provided with a mounting cavity located above the steel ball sliding groove (301), and the torsion spring (5) is arranged in the mounting cavity. The two ends of the torsion spring (5) are respectively connected to the output shaft (2) and the release knob (3).
7. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: The upper portion of the output shaft (2) is provided with a connecting sleeve (6) located above the release knob (3), and the connecting sleeve (6) is rotatably connected to the output shaft (2) via a bearing (7).
8. The flat head assembly structure of a stirring accessory according to claim 1, characterized in that: An annular clamping groove is provided at the lower portion of the output shaft (2), the inner wall diameter of the annular clamping groove being larger than the width of the clamping piece (101), and a clamping spring located at the lower end of the release knob (3) is clamped in the annular clamping groove.
9. A flat head assembly structure for a stirring accessory according to any one of claims 1 to 8, characterized in that: The output shaft (2) at the upper end of the plug-in slot is connected to a spring installation slot, a spring (8) is installed in the spring installation slot, the upper end of the spring (8) is connected to the inner top surface of the spring installation slot, and the lower end of the spring (8) is in contact with the upper end of the clamping piece (101).